Briggs & Stratton 276535, Repair Manual

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2-Cycle Snow Engine
Section 4 - Engine Overhaul
Page 14
Piston And Rings
1. Insert new rings into cylinder bore approximately
1” (25mm).
2. Use a feeler gauge to check ring end gap as
shown in figure 33. Replace ring set if gap is more
than
.030 (0.76mm)
Fig. 33
3. Install new rings on piston using ring expander
(#19340)
.
4. Check side clearance of ring grooves as shown in
figure 34. Replace piston if clearance is more
than
.005 in. (0.12mm)
.
Fig. 34
5. Check piston for wear or damage. Replace if
questionable.
6. Check piston pin bore (Figure 35) using dial
caliper
(#19199)
. Replace piston if bore is more
than
.501 in. (12.72mm).
7. Check piston diameter using a dial caliper
(#19199)
. Replace piston if diameter is less than
2.4935 in. (63.33mm)
.
Fig. 35
Piston Pin (Wrist Pin) And Connecting Rod
1. Check piston pin in two directions as shown in
figure 36. Replace pin if diameter is less than
.4993 in. (12.68mm)
.
Fig. 36
2. Visually check crank pin bearing (Figure 37) for
wear or damage. Replace connecting rod if piston
pin bearings are loose or damaged.
Fig. 37
Use New Piston Rings
Piston Pin Bearing
Crank Pin Bearing