Waterax MARK-3 - Technical Data; Pump End Specifications; Engine Specifications

WATERAX MARK-3 Owner's Manual
03/2016 – Page 45 of 52
TECHNICAL DATA
Pump End
Threads
Discharge port
1-1/2” [38 mm] NPSH male
Suction (intake) port
2” [51 mm] NPSH male
Priming port
1-1/2” [38 mm] NPSH male
Torque Values
Retaining ring screw
22-25 in-lbs
2.5-2.8 Nm
Shaft nose screw
32-36 in-lbs
3.6-4.1 Nm
Suction cover screw
32-36 in-lbs
3.6-4.1 Nm
Lock nut 12-50
250-260 in-lbs
28-29 Nm
Clearance Data and Limits
Impeller outside diameter
Impeller hub outside diameter
Impeller bore
Impeller rear shroud diameter
Impeller height (12-7)
Impeller height (12-11)
3.660-3.675 in
2.105-2.113 in
0.669-0.671 in
0.908-0.918 in
1.525-1.532 in
1.334-1.343 in
92.96-93.35 mm
53.47-53.67 mm
16.99-17.04 mm
23.06-23.32 mm
38.74-38.91 mm
33.88-34.11 mm
Distributor vane diameter
Distributor bore
Distributor rear hub diameter
3.740-3.770 in
0.938-0.957 in
2.127-2.140 in
95.00-95.76 mm
23.83-24.31 mm
54.03-54.36 mm
Pump body (volute) ball bearing housing bore
Pump body (volute) mechanical rotary seal housing bore
2.047-2.049 in
1.810-1.812 in
51.994-52.045 mm
45.974-46.025 mm
Suction cover hub diameter
Suction cover bronze bearing bushing bore
Suction cover rear face & bronze bushing perpendicularity
2.127-2.140 in
0.7495-0.7505 in
0.004 in
54.03-54.36 mm
19.037-19.063 mm
0.10 mm
Shaft ball bearing diameter
Shaft bronze bushing bearing diameter
Shaft maximum run-out
0.9844-0.9847 in
0.4980-0.5000 in
0.0035 in
25.004-25.011 mm
12.649-12.700 mm
0.089 mm
Bronze bushing bearing bore
0.501-0.503 in
12.725-12.776 mm
Engine
Specifications
Bore
2.441 in
62 mm
Stroke
2.402 in
61 mm
Displacement
11.24 ci
184 cc
Direction of rotation
Counterclockwise (from output shaft)
Spark plug type
Bosch M4AC 18 mm
Torque Values
Spark plug
310-354 in-lbs
35-40 Nm
Cylinder head nuts
177-195 in-lbs
20-22 Nm
Cylinder head decompression
switch
190-210 in-lbs
21-24 Nm
Starter pulley mounting nuts
71-89 in-lbs
8-10 Nm
Stator mounting screws
22-27 in-lbs
2.5-3 Nm
Labyrinth ring mounting screws
18-22 in-lbs
2-2.5 Nm
Fan mounting screws
35-44 in-lbs
4-5 Nm
Magneto mounting nuts
71-89 in-lbs
8-10 Nm
Crankshaft M12 nuts
399-443 in-lbs
45-50 Nm
Crankcase screws
71-89 in-lbs
8-10 Nm
Crankcase drain screw
89-133 in-lbs
10-15 Nm
M6 studs (except for carburetor
studs)
27-35 in-lbs
3-4 Nm
M8 studs
53-71 in-lbs
6-8 Nm
M10 studs
89-106 in-lbs
10-12 Nm