3.14
ENGINE
9923412 - 2012 Sportsman 400/500 and EFI Tractor Service Manual
© Copyright 2011 Polaris Sales Inc.
Crankshaft Straightening
Lubricate the bearings and clamp the crankshaft securely
in the Crankshaft Truing Stand (PN 2870569). Refer to the
illustrations below.
NOTE: The rod pin position in relation to the dial
indicator position tells you what action is required to
straighten the shaft.
1. To correct a situation like the one shown in the
illustration, strike the shaft at point A with a brass
hammer.
2. To correct a situation like the one shown in the
illustration, squeeze the crankshaft at points A. (Use
tool from alignment kit).
3. If the crank rod pin location is 180
o
from the dial
indicator (opposite that shown above), it will be
necessary to spread the crankshaft at position A as
shown in the illustration at right. When rebuilding and
straightening a crankshaft, runout must be as close to
zero as possible.
NOTE: Maximum allowable runout is .0024”.
Engine Lubrication
Oil Type:Polaris Premium 4 Synthetic or API certified “SH”
2W-50 oil
Capacity: . . . . . . . Approximately 2 U.S. Quarts (1.9 l)
Filter Wrench . . . . (PV-43527)
*Drain Plug / Screen Fitting...14 ft. lbs. (19 Nm) (If fitting is
removed, follow oil pump priming procedure).
*Oil Pressure Specification...20 PSI @ 5500 RPM, Polaris
2W-50 Synthetic (Engine Hot)
Oil Pressure Test
1. Remove blind plug on front left cylinder head.
2. Insert a 1/8 NPT oil pressure gauge adaptor into the
cylinder head and attach the gauge.
3. Start engine and allow it to reach operating
temperature, monitoring gauge indicator.
NOTE: Use only Polaris Premium 4 Synthetic Engine
Lubricant (PN 2871281).
Crankshaft Truing Stand
(PN 2870569)
A
B
HIGH .004 (.1 mm)
HIGH .004 (.1 mm)
SUPPORT CRANKSHAFT
HERE
A
A
HIGH .002 (.05 mm)
HIGH .005 (.13 mm)
A
A
HIGH .002 (.05 mm)
HIGH .005 (.13 mm)
Oil Pressure at 5500 RPM (Engine Hot):
Standard: 20 PSI
Minimum: 12 PSI
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