ENGINE SHOP REBUILD & SERVICE PARTS MANUAL - Jacobsen
ENGINE SHOP REBUILD & SERVICE PARTS MANUAL - Jacobsen
ENGINE SHOP REBUILD & SERVICE PARTS MANUAL - Jacobsen
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
<strong>ENGINE</strong> MEASUREMENTS<br />
Measure each position in<br />
the cylinder bore at 2 places<br />
A 2<br />
A 1 1<br />
B 1 B 2 1 2<br />
Crankcase<br />
A fine cross-hatched surface<br />
is the proper finish for a<br />
cylinder bore.<br />
Detail A<br />
C 1 C2 2<br />
90 o 2.519"~2.520" STD.<br />
A<br />
B<br />
C<br />
If "A " exceeds "C ", or if "A " exceeds<br />
"C " by 0.004" (.1mm), rebore the cylinder.<br />
295cc<br />
(64.000mm~64.019mm)<br />
350cc<br />
2.6378"~2.6385" STD.<br />
(67.000mm~67.019mm)<br />
telescoping<br />
gauge<br />
Cylinder bore dimension is determined by<br />
size of the piston to be used. If over size<br />
piston is used, "C" represents specified<br />
bore for that piston. Relative dimension<br />
for "A" remains valid.<br />
.25mm and .50mm oversize<br />
pistons are available.<br />
Cutaway view of crankcase at cylinder bores<br />
Fig. C-3 Crankcase Cylinder Bores<br />
Page C-4<br />
Engine Shop Rebuild and Parts Manual
Change language