Content .. 49 50 51 52 ..

Snowmobile Ski Doo REV SERIES (2006 year). Instruction - part 51

Section 04 FUEL SYSTEM
Subsection 03 (DPM SYSTEM)

A06E2OA

1. Plastic seal
2. O-rings

Jet

When installing jet in DPM, ensure to position the
taper end as shown.

A32C6WA

1. Vent jet
2. Lean jet
3. Taper end here

Pay also attention not to mix jets. Refer to the
following table for the proper inner diameter size.
Refer to the illustration above for the jet location.

INSIDE DIAMETER

mm (in)

MODEL

VENT JET

LEAN JET

All

1.2 (.047)

2.0 (.079)

Cap

Prior to installing DPM cap, ensure O-ring is in
good condition. To install cap, firmly push until
tabs click and lock on both sides in DPM.

DPM MANIFOLD TESTING

All DPM Models

Visual Inspection

With DPM manifold removed from vehicle and all
hoses disconnected from DPM manifold, inspect
for any broken fittings or missing dust caps. If any
part is broken, replace DPM manifold and do not
proceed with leak test procedure. If any part is
missing, order necessary part as listed in parts cat-
alog, replace, then perform leak test procedure.

If there is no apparent breakage or missing part
on DPM manifold, perform the following leak test
procedure.

Leak Testing

Required Items

The following items will be required:

– Water column with at least 350 mm (13-3/4 in)

in height.

– Engine leak test kit (P/N 529 021 800) .

529 021 800

– 4.8 mm (3/16 in) T-fitting.
– 6 mm (15/64 in) T-fitting.
– 3.5 mm (9/64 in) ID x 100 mm (4 in) hose.
– 6 mm (15/64 in) ID x 300 mm (12 in) hose.

DPM Manifold Preparation

Connect hoses as shown.

196

mmr2005-104

Section 04 FUEL SYSTEM

Subsection 03 (DPM SYSTEM)

A32C6UA

1. 3.5 mm (9/64 in) ID hose
2. 6.0 mm (15/64 in) ID hose
3. 6.0 mm (15/64 in) T-fitting

Water Column Preparation

Mount water column vertically and secure it to a
wall or workbench.

Fill water column to center line (at least 175 mm
(6-7/8 in)) in height. Refer to following photo.

A02C2ZA

1. Center line at 175 mm (6-7/8 in)

A. 350 mm (13-3/4 in)

Connecting the Pump, DPM Manifold
and Water Column

Connect hoses as shown.

A32C6YA

1. 4.8 mm (3/16 in) T-fitting
2. T-fitting
3. Vented to atmosphere

Collect hose into one of the water column tubes,
leave the other tube at atmospheric pressure.

Testing

Set pump to «vacuum».

CAUTION: Never use pump directly on DPM to
make a pressure test. The vacuum produced
by the pump is too high and would damage
DPM components. Use the water column as
explained above.

Apply negative pressure (vacuum) until the ex-
tremities of the water in the tube attain a differ-
ence of 350 mm (13-3/4 in).

Stop pumping and allow water levels to stabilize
in tube.

Analysis

If water level remains unchanged, the DPM man-
ifold is not defective.

If water level drops slowly to return to an even
level in more than 10 seconds, the DPM manifold
is not defective.

mmr2005-104

197

Section 04 FUEL SYSTEM
Subsection 03 (DPM SYSTEM)

If water level drops to an even level in less than 10
seconds, the DPM manifold is defective. Replace
DPM manifold parts, (refer to Parts Catalog) and
re-test. If test fails again, replace DPM manifold.

If you are unable to attain any amount of vacuum
(water level increases and decreases immediately
in tube), check your set-up and re-do the test.

If you still cannot attain any vacuum, DPM mani-
fold is defective. Replace DPM manifold.

198

mmr2005-104

Section 05 ENGINE MANAGEMENT (POWER TEK)

Subsection 01 (OVERVIEW)

OVERVIEW

SERVICE TOOLS

Description

Part Number

Page

VCK (Vehicle Communication Kit) ......................................... 529 035 981 ................................. 202–203

A33C4NS

1. Engine control module (ECM) including air pressure sensor (APS)
2. TM carburetors
3. DPM manifold
4. RAVE valves
5. RAVE valve solenoid
6. Air temperature sensor (ATS)
7. Coolant temperature sensor (CTS)
8. Knock sensor (KS)
9. Throttle position sensor (TPS)
10. Ignition coil
11. Trigger coil

mmr2005-105

199

Content .. 49 50 51 52 ..