Snowmobile Polaris 800 RMK / 800 Pro-RMK / 800 RMK (2010 year). Manual - part 7

29

FEATURES

Fuel Resistor

This snowmobile is equipped with a feature that allows the engine con-
troller to select the proper operating software based on the type of fuel 
being used. See pages 59-60 for fuel information and recommendations.

The ECU fuel designation connector must have the “NON-ETHANOL 
160 OHM” resistor installed when using non-ethanol gasoline. 

When using ethanol, MTBE, or other forms of oxygenated gasoline, the 
“10% ETHANOL 24 OHM” resistor must be connected.

Whenever in doubt of your fuel purchase, use the “10% ETHANOL 24 
OHM” resistor as a safeguard.

The resistor is installed into the wiring harness on the left side of the 
snowmobile just above the top of the oil bottle (see photo).

NOTICE: Engine damage may occur if ethanol fuel is used while the non-etha-

nol fuel resistor is installed. The check engine light may also display in 
this condition as this could cause detonation. 

10

%

   ETHANOL

24  OHM

NON-ETHANOL

160  OHM

Resistor

NON-ETHANOL GASOLINE 

91+ OCTANE

(Maximum Performance)

ETHANOL, MTBE, OR OTHER 

OXYGENATED GASOLINE

(Factory Delivery)

ANY FUEL WITH ETHANOL

or LESS THAN 91 OCTANE

(87 Octane Minimum)

30

FEATURES

Detonation Elimination Technology (DET)

The DET system prevents damage to the engine from detonation by 
going into an engine protection mode whenever the DET system is 
active.

When excessive detonation is detected, 
the check engine light will illuminate 
and you may notice decreased engine 
performance and RPM when the DET 
system is activated. In most cases this 
is temporary and the operator does not 
need to take any action. The engine 
will return to its normal performance 
automatically.

If severe detonation occurs, the check engine light will begin to flash 
steadily and the gauge indicator will read “dET” (see illustration). The 
engine will enter a limp home mode and RPM will be limited to 6500 
RPM. The engine will remain in this mode until it is shut down and 
restarted.

Check Engine Light

Indicates

Solid or Flickering

Excessive detonation detected

Steady Flashing

Severe detonation detected, RPM will be limited

31

FEATURES

Detonation Elimination Technology (DET)

The most likely causes of severe detonation are outlined in the trouble-
shooting table below.

DET Troubleshooting

Cause of DET Activation

Solution

Poor quality fuel

Replace with higher quality fuel

Incorrect ethanol/non-ethanol fuel 

resistor installed

Verify correct fuel resistor for fuel type 

in tank

Low fuel/no fuel in tank

Refuel with recommended fuel

Water in fuel

Replace with recommended fuel

Plugged fuel filter or tank pick-up sock See your POLARIS dealer for service

Alcohol-based fuel additive used with 

Ethanol fuel

Do not add deicers or additives that 
contain any form of alcohol while 
using up to 10% Ethanol fuel

Improper engine modifications

Do not modify the engine

32

FEATURES

Instrument Cluster

The instrument cluster contains 
indicator lights and the rider infor-
mation center. The information cen-
ter can be controlled by either the 
MODE and SELECT buttons on the 
instrument cluster or by the MODE/
SET switch on the left handlebar or 
console.

NOTICE: Certain products will damage 

the lens and other plastic sur-
faces. Do not use alcohol to 
clean the instrument cluster. 
Immediately clean off any 
gasoline that splashes on the 
instrument cluster.

Rider Information 

Center

Check Engine 

Indicator

High Beam 

Indicator

Low Oil 

Indicator

Over-

Temperature 

Indicator

Park Brake

Indicator

Reverse 

Indicator

MODE

Button

SELECT

Button

Mode/Set Switch 

(RMK)

SET

MODE

Mode/Set Switch 

(PRO-RMK/ASSAULT)