Honda 2021 REBEL 300 Street Cruiser

Operation Guide

Parts Location

Instruments

Display Check

When the ignition switch is turned to the ON position, initial animation will show. If any part of these displays does not come on when it should, have your dealer check for problems

Odometer [TOTAL] & Tripmeter [TRIP A/B] & Current fuel mileage & Average fuel mileage [AVG A/B] & Reserve fuel consumption [RES]

The SEL button switches between the odometer, tripmeter A, tripmeter B, average fuel mileage A, average fuel mileage B, current fuel mileage and reserve fuel consumption.

When the 1st (E) segment of the fuel gauge starts flashing, the odometer, tripmeter A, tripmeter B, average fuel mileage A, average fuel mileage B or current fuel mileage switches to the reserve fuel consumption.

Odometer [TOTAL]

Total distance ridden. When “------” is displayed, go to your dealer for service.

Tripmeter [TRIP A/B]

Distance ridden since tripmeter was reset. When “-----.-” is displayed, go to your dealer for service.

Average fuel mileage [AVG A/B]

The average fuel mileage A will be based on tripmeter A. Displays the average fuel mileage A since tripmeter A was reset. The average fuel mileage B will be based on tripmeter B. Displays the average fuel mileage B since tripmeter B was reset. Display range: 0.0 to 299.9 mile/gal (L/100km or km/L)

• Initial display: “---.-” is displayed.
• When the tripmeter A or B is reset: “---.-” is displayed.
• More than 299.9 mile/gal (L/100km or km/L) : “299.9” is displayed.

When “---.-” is displayed except for the above-mentioned cases, go to your dealer for service.

Current fuel mileage

Displays the current instant fuel mileage. Display range: 0.0 to 299.9 mile/gal (L/100km or km/L)

• Initial display: “---.-” is displayed.
• When your speed is less than 4 mph (6 km/h): “---.-” is displayed.
• More than 299.9 mile/gal (L/100km or km/L) : “299.9” is displayed.

When “---.-” is displayed except for the above-mentioned cases, go to your dealer for service.

Reserve fuel consumption [RES]

Displays the fuel consumption since the 1st (E) segment of the fuel gauge starts flashing. When the 1st (E) segment of the fuel gauge starts flashing, the odometer, tripmeter A, tripmeter B, average fuel mileage A, average fuel mileage B or current fuel mileage switches to the reserve fuel consumption. You should refill the tank as soon as possible. Display range: 0.0 to 99.9 gal (gallon) or 0.0 to 99.9 L (liters)

• Flashes from “0.0”
• More than 99.9 gal (gallon) or 99.9 L (liters) : “99.9” is displayed.

After refueling more than the reserve amount, the display returns to normal.

When “---.-” is displayed, go to your dealer for service.

To reset the tripmeter [TRIP A/B] and average fuel mileage [AVG A/B]

To reset the tripmeter A and average fuel mileage A together, press and hold the SET button while the tripmeter A or average fuel mileage A is displayed.

When they are reset, reset display appears at each indication. Then, the display returns to the last selected indication.

To reset the tripmeter B and average fuel mileage B together, press and hold the SET button while the tripmeter B or average fuel mileage B is displayed.

When they are reset, reset display appears at each indication. Then, the display returns to Operation Guide the last selected indication.

Display Setting

Following items can be changed sequentially.

• Time format setting
• Clock setting
• Backlight brightness adjustment
• Changing of speed and mileage unit
• Changing of fuel mileage meter unit (only when km unit system is selected)

In addition, to move the ordinary display at display setting.

• The buttons is not pressed for about 30 seconds.
• Turn the ignition switch to the OFF position and then to the ON position.

1 Time format setting:

You can switch the time format between 12 hour format or 24 hour format.

1. Turn the ignition switch to the ON position.

2. Press and hold SEL and SET buttons until the current time format start flashing.

3. Press SEL button to select “12 hr” or “24 hr”.

4. Press SET button. The time format is set, and then the display moves to the clock setting.

2. Clock setting:

1. Press SEL button until the desired hour is displayed.

Press and hold SEL button to advance the hour quickly.

2. Press SET button. The minute digits start flashing.

3. Press SEL button until the desired minute is displayed.

Press and hold SEL button to advance the minute quickly.

4. Press SET button. The clock is set, and then the display moves to the backlight brightness adjustment.

3 Backlight brightness adjustment:

You can adjust the brightness to one of five levels.

1. Press SEL button. The brightness is switched.

2. Press SET button. The backlight is set, and then the display moves the changing of the speed and mileage unit.

4 Changing of speed and mileage unit:

1. Press SEL button to select either “mph” and “mile” or “km/h” and “km”.

2. When the “km/h” for speed and “km” for mileage are selected

Press SET button. The speed and mileage unit is set, and then the display moves to the changing of fuel mileage meter unit.

When the “mph” for speed and “mile” for mileage are selected

Press SET button. The speed and mileage unit is set, and then the display returns to the ordinary display

5. Changing of fuel mileage meter unit:

Press SEL button to select “km/L” or “L/ 100km” .

Press SET button. The fuel mileage meter unit is set, and then the display moves to the ordinary display.

The established setting can also be set by turning the ignition switch to the OFF position.

The control is automatically switched from the setting mode to the ordinary display if the button is not pressed for about 30 seconds. Even in this case, established setting is maintained.

Indicators

If one of these indicators does not come on when it should, have your dealer check for problems.

Switches

Steering Lock

Lock the steering when parking to help prevent theft.

A U-shaped wheel lock or similar device is also recommended.

Locking

1. Turn the handlebar all the way to the left.

2. Insert the ignition key in the steering lock.

3. Push the ignition key down, and turn it 180 degrees clockwise.

Jiggle the handlebar if the lock is difficult to engage.

4. Remove the ignition key. #

Unlocking

Insert the ignition key, push it in, and turn it 180 degrees counterclockwise.

Starting the Engine

Start your engine using the following procedure, regardless of whether the engine is cold or warm.

NOTICE

• If the engine does not start within 5 seconds, turn the ignition switch to the OFF position and wait 10 seconds before trying to start the engine again to recover battery voltage.
• Extended fast idling and revving the engine can damage the engine, and the exhaust system.

1. Make sure the engine stop switch is in the (Run) position.
2. Turn the ignition switch to the ON position.
3. Shift the transmission to Neutral ( N indicator comes on). Alternatively, pull in the clutch lever to start your vehicle with the transmission in gear so long as the side stand is raised.
4. Press the start button with the throttle completely closed.

If you cannot start the engine:

With the throttle slightly open (about 1/8 in (3 mm), without freeplay) while starting the engine.

About 1/8 in (3 mm), without freeplay

If the engine does not start:

1. Open the throttle fully and press the start button for 5 seconds.
2. Repeat the normal starting procedure.
3. If the engine starts, open the throttle slightly if idling is unstable.
4. If the engine does not start, wait 10 seconds before trying steps 1 & 2 again.

Shifting Gears

Your vehicle transmission has 6 forward gears in a one-down, five-up shift pattern.

If you put the vehicle in gear with the side stand down, the engine will shut off.

Recommended Shift Points

Shifting Up

Shifting Down

NOTICE

Improper shifting can damage the engine, transmission, and drive train. Also, coasting or towing the vehicle for long distances with the engine off can damage the transmission.

Refueling

Tool

The 5 mm Hex wrench is stored behind the right side cover.

To remove the 5 mm Hex wrench, loosen the screw with a coin.

The tools are stored on the underside of the seat.

Store the tools and secure them with the rubber strap as shown.

The fuse puller is stored on the battery cover under the seat.

Document Bag

The document bag is stored on the underside of the seat.

Store the document bag and secure it with the rubber strap as shown.

Maintenance

Removing & Installing Body Components

BATTERY

Removal

Make sure the ignition switch is in the OFF position.

1. Remove the seat. 2

2. Remove the data link connector while pressing its tab from the battery cover.

3. CMX300A only Remove the air check connector while pressing its tab from the battery cover.

4. Remove the connector holder and relay holders from the battery cover.

5. Release the wire harness from the guide on the battery cover.

6. Remove the clips.

7. Disconnect the negative - terminal from the battery.

8. Pull up the battery cover.

9. Disconnect the positive + terminal from the battery.

10. Remove the battery taking care not to drop the terminal nuts.

Installation

Install the parts in the reverse order of removal. Always connect the positive + terminal first. Make sure that bolts and nuts are tight.

Make sure the clock information is correct after the battery is reconnected.

CLIP

Removal

1. Press down on the center pin to release the lock.

2. Pull the clip out of the hole.

Installation

1. Push the bottom of the center pin.

2. Insert the clip into the hole.

3. Press down on the center pin to lock the clip.

HARNESS BAND CLIP

Removal

Pull the harness band clip while pressing both sides of the anchor.

Installation

Install the harness band clip until it seats properly.

SEAT

Removal

1. Pull the rear corners of the seat up, then remove the mounting bolts using the provided 5 mm Hex wrench.

2. Pull the seat back and up.

Installation

1. Insert the tab into the recess.

2. Install and tighten the mounting bolts securely. Make sure that the seat is locked securely in position by pulling it up lightly.

SIDE COVER

The right and left side covers can be removed in the same way.

Removal

1. Grasp the side cover.

2. Remove the prongs from the grommets.

3. Remove the side cover.

Installation

Install the parts in the reverse order of removal.

Engine Oil

Checking the Engine Oil

1. If the engine is cold, idle the engine for 3 to 5 minutes.
2. Turn the ignition switch to the OFF position and wait for 2 to 3 minutes.
3. Place your vehicle in an upright position on a firm, level surface.
4. Check that the oil level is between the upper level and lower level marks on the oil level inspection window.

Adding Engine Oil

If the engine oil is below or near the lower level mark, add the recommended engine oil.

1. Remove the oil fill cap. Add the recommended oil until it reaches the upper level mark.

• Place your vehicle in an upright position on a firm, level surface when checking the oil level.
• Do not overfill above the upper level mark.
• Make sure no foreign objects enter the oil filler opening.
• Wipe up any spills immediately.

2. Securely reinstall the oil fill cap.

NOTICE Overfilling with oil or operating with insufficient oil can cause damage to your engine. Do not mix different brands and grades of oil. They may affect lubrication and clutch operation.

Coolant

Checking the Coolant

Check the coolant level in the reserve tank while the engine is cold.

1. Place your vehicle on a firm, level surface.
2. Hold your vehicle in an upright position.
3. Check that the coolant level is between the UPPER level and LOWER level marks on the reserve tank.

If the coolant level is dropping noticeably or the reserve tank is empty, you likely have a serious leak. Have your vehicle inspected by your dealer.

Adding Coolant

If the coolant level is below the LOWER level mark, add the recommended coolant until the level reaches the UPPER level mark.

Add fluid only from the reserve tank cap and do not remove the radiator cap.

1. Remove the reserve tank cap and add fluid while monitoring the coolant level.

• Do not overfill above the UPPER level mark.
• Make sure no foreign objects enter the reserve tank opening.

2. Securely reinstall the reserve tank cap.

WARNING

• Removing the radiator cap while the engine is hot can cause the coolant to spray out, potentially scalding you.
• Always let the engine and radiator cool down before removing the radiator cap.

Brakes

Checking Brake Fluid

1. Place your vehicle in an upright position on a firm, level surface.

2. Check that the brake fluid reservoir is horizontal and that the fluid level is:

Front above the LOWER level mark.

Rear between the LOWER level and UPPER level marks.

If the brake fluid level in either reservoir is below the LOWER level mark or the brake lever and pedal freeplay becomes excessive, inspect the brake pads for wear. If the brake pads are not worn, you most likely have a leak. Have your vehicle inspected by your dealer.

Inspecting the Brake Pads

Check the condition of the brake pad wear indicators.

The pads need to be replaced if a brake pad is worn to the indicator.

1. Front Inspect the brake pads from below the brake caliper.

2. Rear Inspect the brake pads from the rear right of the vehicle.

If necessary have the pads replaced by your dealer.

Always replace both left and right brake pads at the same time.

Adjusting the Brake Light Switch

Check the operation of the brake light switch. Hold the brake light switch and turn the adjusting nut in the direction A if the switch operates too late, or turn the nut in the direction B if the switch operates too soon.

Side Stand

Checking the Side Stand

1. Check that the side stand operates smoothly. If the side stand is stiff or squeaky, clean the pivot area and lubricate the pivot bolt with clean grease.
2. Check the springs for damage or loss of tension.
3. Sit on the vehicle, shift the transmission to Neutral, and raise the side stand.
4. Start the engine, pull the clutch lever in, and shift the transmission into gear.
5. Lower the side stand all the way. The engine should stop as you lower the side stand. If the engine doesn't stop, have your vehicle inspected by your dealer.

Drive Chain

Inspecting the Drive Chain Slack

Check the drive chain slack at several points along the chain. If the slack is not constant at all points, some links may be kinked and binding. Have the chain inspected by your dealer.

1. Shift the transmission to Neutral. Stop the engine.

2. Place your vehicle on its side stand on a firm, level surface.

3. Check the slack in the lower half of the drive chain midway between the sprockets.

4. Roll the vehicle forward and check that the chain moves smoothly.

5. Inspect the sprockets.

6. Clean and lubricate the drive chain.

Clutch

Checking the Clutch

Checking the Clutch Lever Freeplay

Check the clutch lever freeplay

Freeplay at the clutch lever: 3/8 - 13/16 in (10 - 20 mm)

Check the clutch cable for kinks or signs of wear. If necessary have it replaced by your dealer.

Lubricate the clutch cable with a commercially available cable lubricant to prevent premature wear and corrosion.

NOTICE Improper freeplay adjustment can cause premature clutch wear.

Adjusting the Clutch Lever Freeplay

Upper Adjustment

Attempt adjustment with the upper clutch cable adjuster first.

1. Loosen the upper lock nut.

2. Turn the upper clutch cable adjuster until the freeplay is 3/8 - 13/16 in (10 - 20 mm).

3. Tighten the upper lock nut and check the freeplay again.

Lower Adjustment

If the upper clutch cable adjuster is threaded out near its limit, or the correct freeplay cannot be obtained, attempt adjustment with the lower clutch cable adjusting nut.

1. Loosen the upper lock nut and turn the upper clutch cable adjuster all the way in (to provide maximum freeplay). Tighten the upper lock nut.

2. Loosen the lower lock nut.

3. Turn the lower adjusting nut until the clutch lever freeplay is 3/8 - 13/16 in (10 - 20 mm).

4. Tighten the lower lock nut and check the clutch lever freeplay.

5. Start the engine, pull the clutch lever in, and shift into gear. Make sure the engine does not stall and the vehicle does not creep. Gradually release the clutch lever and open the throttle. Your vehicle should move smoothly and accelerate gradually.

If proper adjustment cannot be obtained or the clutch does not work correctly, see your dealer.

Throttle

Checking the Throttle

With the engine off, check that the throttle rotates smoothly from fully closed to fully open in all steering positions and throttle freeplay is correct. If the throttle does not move smoothly, close automatically, or if the cable is damaged, have the vehicle inspected by your dealer.

Freeplay at the throttle grip flange: 1/16 - 1/4 in (2 - 6 mm)

Adjusting the Throttle Freeplay

1. Slide the cable boot.

2. Loosen the lock nut.

3. Turn the adjuster until the freeplay is 1/16 - 1/4 in (2 - 6 mm).

4. Tighten the lock nut, return the cable boot, and inspect the throttle action again.

Other Adjustments

Adjusting the Rear Suspension

Spring Preload

You can adjust the spring preload by the adjuster to suit the load or the road surface. Turn the adjuster using the provided pin spanner.

Position 1 is for a decrease spring preload (soft), or turn the position 3 to 5 increase spring preload (hard). The standard position is 2.

NOTICE

• Attempting to adjust directly from 1 to 5 or 5 to 1 may damage the shock absorber.
• Do not turn the adjuster beyond its limits. Adjust both left and right shock absorbers to the same spring preload.
• The rear shock absorber damper unit contains high pressure nitrogen gas. Do not attempt to disassemble, service, or improperly dispose of the damper. See your dealer.

Troubleshooting

Engine Will Not Start

Starter Motor Operates But Engine Does Not Start

Check the following items:

• Check the correct engine starting sequence.
• Check that there is gasoline in the fuel tank.
• Check if the PGM-FI malfunction indicator lamp (MIL) is on.

If the indicator lamp is on, contact your dealer as soon as possible.

Starter Motor Does Not Operate

Check the following items:

• Check the correct engine starting sequence.
• Make sure engine stop switch is in the (Run) position.
• Check for a blown fuse.
• Check for a loose battery connection or battery terminal corrosion
• Check the condition of the battery.

If the problem continues, have your vehicle inspected by your dealer.

Overheating (High coolant temperature indicator is on)

The engine is overheating when the following occurs:

• High coolant temperature indicator comes on.
• Acceleration becomes sluggish. If this occurs, pull safely to the side of the road and perform the following procedure. Extended fast idling may cause the high coolant temperature indicator to come on.

NOTICE Continuing to ride with an overheated engine can cause serious damage to the engine.

1. Stop the engine using the ignition switch, and then turn the ignition switch to the ON position.

2. Check that the radiator fan is operating, and then turn the ignition switch to the OFF position.

If the fan is not operating:

Suspect a fault. Do not start the engine. Transport your vehicle to your dealer.

If the fan is operating:

Allow the engine to cool with the ignition switch in the OFF position.

3. After the engine has cooled, inspect the radiator hose and check if there is a leak.

If there is a leak:

Do not start the engine. Transport your vehicle to your dealer.

4. Check the coolant level in the reserve tank.

Add coolant as necessary.

5. If 1-4 check normal, you may continue riding, but closely monitor the high coolant temperature indicator.

Warning Indicators On or Flashing

PGM-FI (Programmed Fuel Injection) Malfunction Indicator Lamp (MIL)

If the indicator comes on while riding, you may have a serious problem with the PGM-FI system. Reduce speed and have your vehicle inspected by your dealer as soon as possible.

ABS (Anti-lock Brake System) Indicator

CMX300A only

If the indicator operates in one of the following ways, you may have a serious problem with the ABS. Reduce your speed and have your vehicle inspected by your dealer as soon as possible.

• Indicator comes on or starts flashing while riding.
• Indicator does not come on when the ignition switch is in the ON position.
• Indicator does not go off at speeds above 6 mph (10 km/h).

If the ABS indicator stays on, your brakes will continue to work as a conventional system, but without the anti-locking function.

The ABS indicator may flash if you turn the rear wheel while the rear wheel is lifted off the ground. In this case, turn the ignition switch to the OFF position, and then to the ON position again. The ABS indicator will go off after your speed reaches 19 mph (30 km/h).

Other Warning Indications

Fuel Gauge Failure Indication

If the fuel system has an error, the fuel gauge indicators will be displayed as shown in the illustrations.

If this occurs, see your dealer as soon as possible.

Tire Puncture

Repairing a puncture or removing a wheel requires special tools and technical expertise. We recommend you have this type of service performed by your dealer. After an emergency repair, always have the tire inspected/replaced by your dealer.

Emergency Repair Using a Tire Repair Kit

If your tire has a minor puncture, you can make an emergency repair using a tubeless tire repair kit.

Follow the instructions provided with the emergency tire repair kit.

Riding your vehicle with a temporary tire repair is very risky. Do not exceed 30 mph (50 km/h). Have the tire replaced by your dealer as soon as possible.

WARNING

Riding your vehicle with a temporary tire repair can be risky.

If the temporary repair fails, you can crash and be seriously injured or killed. If you must ride with a temporary tire repair, ride slowly and carefully and do not exceed 30 mph (50 km/h) until the tire is replaced.

Electrical Trouble

Battery Goes Dead

Charge the battery using a motorcycle battery charger.

Remove the battery from the vehicle before charging.

Do not use an automobile-type battery charger, as these can overheat a motorcycle battery and cause permanent damage. If the battery does not recover after recharging, contact your dealer.

NOTICE Jump starting using an automobile battery can damage your vehicle's electrical system and is not recommended. Bump starting is also not recommended.

Burned-out Light Bulb

All light bulbs on the vehicle are LEDs. If there is an LED which is not turned on, see your dealer for servicing.

Blown Fuse

Fuse Box Fuses

1. Remove the battery cover.

2. Open the fuse box covers.

3. Pull the fuses out one by one with the fuse puller and check for a blown fuse. Always replace a blown fuse with a spare fuse of the same rating.

The fuse puller is stored on the battery cover.

CMX300

Spare fuses are provided in the fuse box.

CMX300A

Spare fuses are provided in the fuse box and on the battery cover (to access the spare fuse, open the cover).

4. Close the fuse box covers.

5. Reinstall parts in the reverse order of removal.

Main Fuse

1. Remove the left side cover.

2. Remove the starter magnetic switch from the air cleaner housing cover, then disconnect the wire connector of the starter magnetic switch.

3. Pull the main fuse out and check for a blown fuse. Always replace a blown fuse with a spare fuse of the same rating.

Spare main fuse is provided in the starter magnetic switch.

4. Reinstall parts in the reverse order of removal.

NOTICE If a fuse fails repeatedly, you likely have an electrical problem. Have your vehicle inspected by your dealer.

Unstable Engine Operation Occurs Intermittently

If the fuel pump filter is clogged, unstable engine operation will occur intermittently while riding.

Even if this symptom occurs, you can continue to ride your vehicle.

If unstable engine operation occurs even if sufficient fuel is available, have your vehicle inspected by your dealer as soon as possible.

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