Fuel Pump; Air-Intake Silencer; In Specting And Cleaning; Removing Fuel Tank - Arctic Cat 1987 AFS El Tigre Service Manual

Fuel Pump Removing Fuel Tank
The fue l pump is now a serviceab le item. It may be
ei t her repaired or replaced as a complete un it. To
test fuel pump pressure, use the follow ing pro-
cedure:
a. US ing a tee, connect a pressure gauge be-
tween a fue l pump and one of the carburetors.
b. Usi ng a sh ielded safety sta nd, raise t he rear
of the snowmob il e off the f loor and check the
pressure at various engine rpm .
FUEL PUMP PR ESSUR E
RPM PSI
g/c m2
1000-2000 3.0-3.5 200-240
3000-4000 4.5-5. 5 310-375
5000-6000 6.0-7.0
420-490
Air-Intake Silencer
,
The air-intake silencer is a specially designed
component used to silence the incoming fresh air
and also to catch the fue l that " spits back" out of
the carburetors. The carburetors are calibrated
wi th t he air- int ake silencer in pos ition; therefore,
t he eng in e must neve r be run w it h t he air-int ake
sil ence r re m oved.
INSPECTING AND CLEAN ING
II
NOTE: The air- intake silencer cannot be dis-
assembled; it must be replaced as a com-
plete unit.
1. Wi th t he si le nce r removed , c heck fo r hol es or
crack s in the sil encer.
2. Period i c ally c lean the silencer by blowing
fresh air th rough it.
1. Remove seat cush ion from tunnel.
Fig. 3·38
0727·086
2. Remove the two machine screws securing the
sides of t he console; the n remove the two
machine screws and nuts securing the top of
the co nsole.
Fig. 3·39
8 360
3. Rem ove t he fue l cap and spill seal.
4. Remove t he sprin g sec uri ng the fuel tank to
th e tunnel.
Fig. 3·40
8361
57
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