Mercury XR2 User Manual

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OPERATION
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2
1
a
b
Special Operating Instructions (Cont.)
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OPERATING IN SHALLOW WATER
1 When operating your boat in shallow water, you can tilt the out-
board beyond the maximum trim range to prevent hitting bottom.
a. Reduce engine speed below 2000 RPM.
b. Tilt outboard up. Make sure all the cooling water intake holes
stay submerged at all times.
c. Operate the engine at slow speed only. Never exceed 2000
RPM.
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SETTING TRIM ANGLE WHILE RUNNING ENGINE AT IDLE
SPEED
2 Submerging the exhaust relief hole (a) on the outboard can hap-
pen on some boats if you trim the outboard “full-in” while running
the engine at idle speed. This will cause an exhaust restriction,
resulting in rough idle, excessive smoke, and fouled spark plugs.
If this condition exists, trim outboard up until exhaust relief hole
is out of the water (b).

Mercury XR2 Specifications

General

MODEL	XR2
Horsepower	180 (134kw)
Propshaft Kilowatts1	194
Full Throttle RPM Range	6000-7000
Idle RPM in Forward Gear	650-750
Maximum Timing	25° BTDC
Idle Speed Pickup Timing	2° ATDC
Gear Ratio	1.87:1
Piston Displacement	122 cu. in. (2.0L/1998cc)
Bore	3.125 in. (79.5 mm)
Stroke	2.65 in. (67 mm)
Firing Order	1-2-3-4-5-6
Recommended Spark Plug	NGK-BUHW (P/N 33-97180)
Fuel Pressure	5 - 6 psi
Recommended Gasoline	Refer to Fuel Section
Recommended Oil	Refer to Fuel Section
Recommended Gear Case Oil	Quicksilver Hi-Performance Gear Lube (92-816026A4)
Gear Case Lubricant Ca- pacity	22.5 fl. oz. (666 ml)
Charging System Output	16 amps @ 7000 RPM
Battery Rating	Minimum reserve capacity rating of 100 minutes and CCA of 350
Water Pres. @ WOT	15 PSI (103.4 kPa)

Weight and Dimensions

Weight	350 lbs. (159 kg)
Transom Height	Short Shaft = 15” (381mm) Long Shaft = 20” (508mm)