EY35, EY40 - Small Engine Discount
EY35, EY40 - Small Engine Discount
EY35, EY40 - Small Engine Discount
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5-4 HOW TO REASSEMBLE<br />
5-4-1 PRECAUTION IN REASSEMBLY<br />
Every and each part should be cleaned thoroughly. Especially, pay utmost care and attention to the cleanliness of the<br />
piston, cylinder, crankshaft, connecting rod and bearings.<br />
Scrape completely off carbons from the cylinder head and the upper part of the piston; especially the carbon adhered<br />
in the groove of the piston ring should be carefully and completely taken out.<br />
Carefully check the lip portion of every oil seal. If faulty one is found, replace it without any hesitation.<br />
Apply enough oil to the lip portion of the oil seal when reassembling.<br />
Replace all the gaskets with new ones.<br />
Replace the key, pin, bolt, nuts, etc. with new one, if necessary.<br />
Whenever tightening torque is specified, conform to the specified figures.<br />
Apply oil to the revolutionary parts and friction surfaces, when reassembling.<br />
Check and adjust the clearances of various portions and then reassemble.<br />
When some main portions are assembled in the course of reassembling, turn or move the gadgets by hand and pay at-<br />
tention to the frictional noise and resistance.<br />
r'<br />
5-4-2 MEASURING CRANKCASE and CRANKSHAFT<br />
Bore the cylinder or take other steps as necessary to meet<br />
the following specifications before reassembling.<br />
<strong>EY35</strong><br />
E Y40<br />
29 +0.1<br />
I W (Crankshaft Pin Width) I 0<br />
Bore<br />
Piston Outside Diameter (In Skirt Thrust Direction)<br />
78 dia.<br />
40.019<br />
I<br />
84 dia. , +0.022<br />
I Piston to Cylinder at Piston Skirt Thrust Face I<br />
0.049L - 0.1 08L 1 0.049L - 0.1 11 L<br />
Piston Ring Gap (Top Ring - Second Ring)<br />
Piston Ring Side Clearance in Grooves<br />
(Top Ring - Second Ring)<br />
I<br />
0.1 L - 0.3L<br />
0.05 - 0.09<br />
Clearance between Connecting<br />
Rod Large End and Piston Pin<br />
Clearance between Connection<br />
Rod <strong>Small</strong> End and Piston Pin<br />
Clearance between Inside<br />
and Outside Diameter<br />
Side Clearance<br />
0.070 - 0.102L<br />
0.020L - 0.042L<br />
0.1 L - 0.4L<br />
Clearance between Piston Pin and Pinston Pin Hole<br />
0.1 1T - 0.01 1 L<br />
Fig. 27<br />
L: LOOSE<br />
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