polaris sportsman 500 Motor boggs bad when i give it gas
#142
#143
#145
Pay close attention to head bolt torque as the stages allow for good compression of head and base gasket along with allowing for head bolt stretch.
8. Tighten the four larger bolts (Figure 81) in a
crossing pattern evenly in the following steps. Mark
a line on the large bolts (Figure 82) for a degree reference:
a. Tighten to 30 Nom (22 ft.-lb.).
b. Tighten to 70 Nom (51 It .-lb.).
c. Loosen each of the four bolts exactly 180'
( 1/2 tum).
d. Loosen each of the four bolts again exactly
180' ( 1/2 tum) .
e. Tighten to 15 Nom ( 11 ft.-lb.).
f. Tighten each of the four bolts exactly 90' (1/4
tum).
g. Finally, tighten each of the four bolts exactly
90' (1/4 turn) more.
9. Tighten the two small 6 rnrn bolts (8, Figure 79)
to 8 Nom(71 in. lb.).
8. Tighten the four larger bolts (Figure 81) in a
crossing pattern evenly in the following steps. Mark
a line on the large bolts (Figure 82) for a degree reference:
a. Tighten to 30 Nom (22 ft.-lb.).
b. Tighten to 70 Nom (51 It .-lb.).
c. Loosen each of the four bolts exactly 180'
( 1/2 tum).
d. Loosen each of the four bolts again exactly
180' ( 1/2 tum) .
e. Tighten to 15 Nom ( 11 ft.-lb.).
f. Tighten each of the four bolts exactly 90' (1/4
tum).
g. Finally, tighten each of the four bolts exactly
90' (1/4 turn) more.
9. Tighten the two small 6 rnrn bolts (8, Figure 79)
to 8 Nom(71 in. lb.).
#150
Many times you get what you pay for especially in no name parts. Some posters have used Namura,but the best piston out there is a forged Wiseco. Here's some of both if the cylinder can get by with a stand piston kit.1999 Polaris SPORTSMAN 335 (A99CH33CB) Carburetor | Cycle Parts Warehouse