Engine Oil Pressure Test - Polaris 1999 Sportsman 400 Service Manual

64
h. Tighten the filter by hand unt il the rubb er gas-
ket contacts the crankc ase surface, then
tighte n it an additiona l 1/2 turn .
I I. Insta ll a new gasket on the oil tank drain plug.
12. lnstall the drain plug (Figure 21) and its gas ket.
Tighten to the torque spec ification in Table 5.
13. Insert a funne l into the oil fill hole and fill the
oi l tank and eng ine with the co rrect weig ht (Table
3) and qua ntity of oil (Ta ble 4).
14. Rem ove the funn el, install the oil fill cap /dip-
stick and tighten secure ly.
15. Usually some oil will find its way onto the
frame an d floorboards during this pro cedu re. Wipe
as muc h as possible off with a shop rag, then spray
some aeroso l pa rts cleaner to rem ove most of the oi l
residue.
16. Place the gea r se lector in NEUTRAL and mak e
sure the parking brake is still applied.
17. Start the en gine and allow it to idle .
18. Check the oil filter and both drain plugs for
leaks. Tighten, if necessary.
19. Turn off the en gine and allo w the oil to settle.
Then chec k the engine oi l leve l as described in this
cha pter, Adj ust the oil level if necessary.
WARNING
Contact with oil may cause
cancel:
rV ash both hands thoroughly with
soap and waterus soon as possible af-
fer handling or coming in contact with
motor oil.
Engine O il Pressu re Test
Usc this proce dure to ch eck the engine oil pres-
sure aft er reass embling the eng ine or when trouble-
shooting the lubrication sys te m .
An oil press ure ga uge and 1/8 NPT oil pressure
gauge and adapter or an equivalent, are required .
I. Place the ATV on level ground and set the park-
ing brake.
2. Remove the front fender as describ ed in Chapter
Fiftee n.
3. Check that the eng ine oil level is correc t as de-
scribed in this chap ter.
Add oil if
necessary.
4. Start the engine and allow it to reach norm al op-
erating temperature. Shut the engine ofT .
5. Place a drain pan under the bl ind plug on the cyl-
inder head as some oi l will dra in out.
CHA PTE R T H R EE
NOTE
Fig ure 2S
S hOlVS
the engine removed
for clarity.
6. On the front le n corner of the cyl inder head , un-
screw and rem ove the blind plug (F igure 25) from
the cy linder head.
7. Insta ll the adapt er into the blind plug hole. Make
sure the fittin g is tight to avoid an oil loss. Install the
gauge into the adapte r.
CAUTION
Keep the oil pressure gauge hose
away
/lVl1I
the exha ust pip e during
this fest. lf the hose makes contact
with the exhaust pipe, it may melt and
spray hot oil onto the hut exhaus t
pipe. resulting in a dangerous fire.
8. Place the gear selector in NEUTRAL and make
sure the park ing brake is still applied.
9. Start the eng ine and increase engine speed to
5000 rpm. The oil pressure should be app roxi-
matel y 138 kPa (20 psi ). T he min imum oil pressur e
is 83 kPa (12 psi).