Tracker Off-Road 2262-827, Service Manual

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SNO-287

NOTE: If the existing rings will not be replaced with
new ones, note the location of each ring for proper
installation. When installing new rings, install as a
complete set only.
Measuring Piston-Ring End Gap
(Installed)
1. Place each piston ring in the wear portion of the cyl-
inder. Use the piston to position each ring squarely in
the cylinder.
 NOTE: Remove any carbon; then clean the top of
the cylinder bore before inserting the piston rings.
2. Using a feeler gauge, measure each piston-ring end
gap. Acceptable ring end gap must be within the fol-
lowing specifications.
Piston Ring/Groove Clearance

NOTE: Before checking, piston grooves must be
clean, dry, and free of carbon.
Fit a new piston ring into a piston groove and measure
clearance between ring and ringland by using feeler
gauge. Measurement must be within the following speci-
fications. If clearance is out of specification, replace pis-
ton.
SNO-288
Measuring Piston Skirt/Cylinder
Clearance
1. Measure the cylinder bore using a gauge by taking
side-to-side and front-to-back measurements of the
cylinder. Then, find the average of the measure-
ments.
SNO-289
SNO-290
 NOTE: If out of specification, replace the crankcase
and the piston and piston rings as a set.
Measuring Piston Skirt Diameter
1. Measure the piston skirt diameter (A) with a
micrometer. Be sure to measure 10.0 mm (0.39 in.)
from the bottom edge of the piston (B).
2. Piston skirt diameter must be within 79.95-79.96 mm
(3.1476-3.1480 in.).
1st Ring 0.35-0.45 mm (0.014-0.018 in.)
2nd Ring 0.70-0.80 mm (0.028-0.031 in.)
Oil Rings 0.10-0.35 mm (0.004-0.014 in.)
1st Ring 0.030-0.065 mm (0.0012-0.0026 in.)
2nd Ring 0.02-0.055 mm (0.0008-0.0022 in.)
Cylinder Bore (C) 80.000-80.010 mm (3.150-3.154
in.)
Taper Limit (T) 0.050 mm (0.0020 in.)
Out of Round (R) 0.050 mm (0.0020 in.)
“C” = maximum of D1 - D6
“T” = maximum of D1 or D2 - maximum of D5 or D6
“R” = maximum of D1 D3 or D5 - maximum of D2, D4, or D6