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Servicing Your Honda 21
Maintenance Schedule
ITEMS
THROTTLE OPERATION
HOT STARTER
AIR FILTER
CRANKCASE BREATHER
SPARK PLUG
VALVE CLEARANCE/DECOMPRESSOR SYSTEM
ENGINE OIL
ENGINE OIL FILTER
ENGINE IDLE SPEED
PISTON AND PISTON RINGS
PISTON PIN
TRANSMISSION OIL
RADIATOR COOLANT
COOLING SYSTEM
DRIVE CHAIN
DRIVE CHAIN SLIDER
DRIVE CHAIN ROLLER
DRIVE SPROCKET
DRIVEN SPROCKET
BRAKE FLUID
BRAKE PADS WEAR
BRAKE SYSTEM
CLUTCH SYSTEM
CONTROL CABLES
EXHAUST PIPE/MUFFLER
SUSPENSION
SWINGARM/SHOCK LINKAGE
FORK OIL
NUTS, BOLTS, FASTENERS
WHEELS/TIRES
STEERING HEAD BEARINGS
(NOTE 1)
(NOTE 4)
(NOTE 3)
(NOTE 3)
(NOTE 5)
(NOTE 2)
(NOTE 2)
(NOTE 5)
(NOTE 3)
I
I
C
I
I
I
I
I
I
I,L
I
I
I
I
I
I
I
I
I,L
I
I
I
I
R
L
R
I
R
R
R
R
R
46
51
43
45
52
53
36
37
48
62
64
39
41
41
82
82
83
84
84
76
78
75
49
88
85
70, 71
25, 71
72
89, 137-139
79, 80-81
88I
FREQUENCY
NOTE Ref. Page
Each race
or about
2.5 hours
Every 3 races
or about
7.5 hours
Every 6 races
or about
15.0 hours
Every 9 races
or about
22.5 hours
This maintenance schedule is based upon average riding condition. Machines subjected to severe use require more frequent servicing.
NOTE: 1. Clean after every moto for dusty riding conditions.
2. Replace every 2 years. Replacement requires mechanical skill.
3. Replace after the first break-in ride.
4. Inspect after the first break-in ride.
5. Replace the transmission oil, if the clutch discs and plates are replaced.
Perform the Pre-ride Inspection at each scheduled maintenance period.
I: Inspect and Clean, Adjust, Lubricate or Replace if necessary. C: Clean. R: Replace. A: Adjust. L: Lubricate.
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