Joyner JNSZ1600DL, Руководство пользователя

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44
Fig.38 Fig.39
Note
：
With belt removed
，
don't turn gear excessively
，
or piston head and valve may be damaged for
contacting. ——If belt need to be reused
，
check for improper wear ,delaminate crack (particularly at the
foot of teeth) or dirt. If lightly suspected, replace it. Installation and adjustment
： ——Crankshaft should be
positioned at no.1 cylinder TDC
，
if necessary, crankshaft may only be turned slightly for adjustment and
blocked at flywheel ring gear.
——Engage timing belt tooth with crankshaft grooves ，
and pull belt up straight to the right engaging belt
with cam gear grooves. During the installation of used belt, insure belt is in the right direction and match
belt with appropriate tooth. With belt installed, 2 gears should not make any movement. ——Pull belt
around tension pulley carefully
，
engage belt tooth with gear teeth grooves. Recheck both gears, there
should be no movement. ——Loosen 2 tension pulley mounting bolts
，
push tension pulley right to the
extreme (viewed from the direction of pulley )
，
tighten 2 tension pulley mounting bolts and loosen
crankshaft locking device. ——Rotate crankshaft clockwise (viewed from the pulley end) 2 turns until no.1
cylinder reaches its TDC of compression. ——Grab the midway of the right side belt between crankshaft
gear and camshaft gear with thumb and forefinger. If belt tension is as specified, belt may be twisted 90
°
.
To adjust belt tension
，
loosen 2 tension pulley mounting bolts and push tension pulley right side using
screwdriver as push rod
，
then tighten mounting bolts and rotate crankshaft. Recheck tension.
It may take 2- 3 times before tension is as specified. After adjustment, tighten tension pulley mounting
bolts to 16—20Nm.
——It is only a approximate method to adjust belt
，
and belt tension should be checked as soon as possible by
professionals with special tools