Ec25Pf/Ec28Pf Engines Assembly; Measure Crankshaft Width - Bearings Installed - Polaris Magnum 2x4 Service Manual

ENGINE
EC25PF/EC28PF Engines
Assembly
Before reassembling the crankcase, the following steps should be performed to determine the amount of crank-
shaft end play. Excessive end play will cause the engine to be noisy at idle and slow speeds. Too little end play
will side load the main bearings, which may cause premature bearing failure.
Measure Crankshaft Width - Bearings Installed
1. Measure distance from outer edge of PTO end
bearing race to outer edge of mag side bearing race.
Record measurement.
If bearings and spacers are already installed, measure
distance as shown in photo at right, then proceed to
Step 5.
or ...
If PTO end bearings have not yet been installed, mea
w
sure distance as shown in photo at right, then pro-
ceed to Step 2.
2. Measure distance from crank wheel to bearing
seating surface (A). Record measurement.
5/98 3.14
Polaris Industries Inc.