Drive Chain - Honda VF1000F 1985 Shop Manual

MAINTENANCE
CYLINDER COMPRESSION
Warm up the engine.
Stop the engine, then disconnect the spark plug caps and
remove the spark plugs.
Insert the compression gauge.
Open the throttle all the way and crank the engine with the
starter motor.
NOTE
Crank the engine until the gauge reading stops rising. The
maxi mum reading is usually reached within 4- 7 seconds.
COMPRESSION PRESSURE:
1.275 ± 196 kPa (13.0 ± 2.0 kg/ em'. 185 ± 28 psi)
If compress ion is low, check for the followi ng :
Improper valve clearance
Leaky val ves
Leaking cylinder head gasket
Worn piston/ring/cylinder
If compression is
high, it
indicates that carbon deposits have
accumulated on the combustion chamber and/or the piston
crown.
DRIVE CHAIN
Turn the engine off, place the motorcycl e on its center stand
and shift the transmission into neutral. Check slack in the
drive chain lower run midway between the sprockets.
SLACK: 15-25 mm (5/8-1 inl
CAUTION
Excessive chain slack, 40 mm (1·5/8 in) or more. may
damage the frame.
Adju st as follows:
Loo sen the axle nut.
Loosen the adjusting bolt lock nuts.
Turn both adjusting bolts an equal number of turns until the
correct drive chain slack is obtained.
CAUTION
Make sure that the same alignment marks on both adjusting
pltites align with the ellds of the swingann.
Tighten the adjusting bolt lock nuts.
T ighten the rear axle nut.
TORQUE: 85-105 N.m (8.5-10.5 kg·m. 61-76 ft·lbl
Recheck chain slack and free wheel rotation.
Lubricate the drive chain with SAE 80 or 90 gear oil.
3-11
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