Maintenance & Repair
39
Instructions:
1)
Make sure engine is off and spark plug wires are removed.
2)
Remove belt guard. See "Parts Breakdown" section of this manual for
location.
3)
Loosen pump mounting bolts (4).
4)
Inspect belts for wear/damage. Replace as needed. When replacing
belts, always replace all – don't mix old and new belts.
5)
Tighten tension bolt to achieve the recommended belt tension specified
below. (Tightening the tension bolt pulls the pump away from the
engine, tightening all belts simultaneously.)
Tension Specifications New belt Used Belt
Static tension (per rib/strand): 87.0-93.2 lb. 74.5-80.8 lb.
Rib/strand Deflections Distance: 0.2 in 0.2in
Rib/Strand Deflection Force: 5.9-6.3 lb. 5.2-5.5 lb.
Sonic Tension Meter:
387 to 414 N 332 to 359N
Note: Some general rules of belt tension are:
The ideal tension is the lowest tension without belt slippage
Over tightening decreases belt and bearing life.
Keep belts clean and free of foreign material that may cause slippage
Do not apply belt dressing, which can cause damage and early belt
failure.
6)
Ensure all belts are the same tension.
7)
Re-tighten pump mounting bolts. Torque to 29.4 ft-lbs.
8)
Replace belt guard.
WARNING
:
Do not operate unless belt guard is in place to prevent access to rotating
parts. Clothing or hair can become rapidly entangled in unguarded
rotating parts, resulting in serious injury or death.
NOTE TO COMMERCIAL USERS:
All mechanical equipment, no matter how well designed, will need maintenance and repairs. A
NorthStar pressure washer is no exception. At times, a NorthStar pressure washer may become
inoperable because repairs are required. NorthStar Product Support will assist in these repairs as
needed, but if an inoperable pressure washer creates a major expense to your business, then we strongly
recommend the following:
Have a staff person become familiar with the mechanical operation of the pressure washer and
capable of making minor repairs and performing all preventative maintenance procedures.
Keep a stock of recommended service parts for maintenance and minor repairs.
IMPORTANT:
If a part needs replacement, only use parts that meet the manufacturer's part number specifications.
Replacement parts that do not meet specifications may result in a safety hazard or poor operation of the
pressure washer.
Contact NorthStar Product Support at 1-800-270-0810 for any
questions, problems, or parts orders.
