TRANSMISSION SYSTEM
4-45
D569-W02 May-2003
Checking Contact Between Coupling and
Shifter
1. Check to see if there is any flaw or wear on the
spline of the coupling and shifter, and the key groove
on the coupling.
2. Engage the shifter with the coupling, and check that
they slide smoothly.
3. Similarly, check that there is any flaw or wear on the
gear splines.
4. If there is any defect, replace them.
569W468A
569W469A
Clearance Between Gear and Shaft
1. Measure the shaft O.D. (rubbing surface).
2. Measure the gear I.D. (rubbing surface).
3. Measure the O.D. of the two needles installed di-
agonally in the needle bearing.
4. Calculate the clearance.
(Clearance=Gear I.D.-{ (2 x needle O.D.)+shaft O.D.}
5. If the clearance exceeds the allowable limit, replace
them.
Clearance
between
gear and
shaft
Factory spec.
Allowable limit
0.021 ~ 0.054 mm
0.00083 ~ 0.00213 in.
0.1 mm
0.004 in.
569W467A
Flaw on Synchronizer Key and Spring
1. Check the projection in the center of the synchro-
nizer key for wear.
2. Check the spring for fatigue of wear on the area
where the spring contacts with the keys.
3. If there is any defect, replace them.
www.mymowerparts.com
K&T Saw Shop 606-678-9623 or 606-561-4983
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