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Technical Information
225
Specifications
Fuel & Lubricants (cont’d)
cooling system
recommendation
Pro Honda HP Coolant or an
equivalent high quality ethylene
glycol antifreeze containing
corrosion protection inhibitors
specifically recommended for use in
aluminum engines
cooling system
capacity
1.7 US qt (1.6 ℓ)
Capacities
passenger
capacity
operator only
maximum weight
capacity
485 lb (220 kg)
rider, all cargo and accessories
Engine Specifications
displacement 25.6 cu-in (420 cm
3
)
bore & stroke 3.406 × 2.815 in (86.50 × 71.50 mm)
compression ratio 9.9 : 1
spark plug
(standard)
BKR5E-11 (NGK) or
K16PR-U11 (DENSO)
spark plug gap 0.039 – 0.043 in (1.00 – 1.10 mm)
valve clearance
(cold)
intake: 0.006 in (0.15 mm)
exhaust: 0.009 in (0.23 mm)
idle speed 1,400 ± 100 rpm
(NO ADJUSTMENT)
19 TRX420TM1 FM1_31HR3650.book Page 225 Tuesday, April 3, 2018 11:37 AM
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