Top Weight Bushings; Weight Stack Guide Rods; Weight Stack Suspension; Weight Selection Shaft - Life Fitness MJ4 Owner's Manual

2. General Specifications

7. Top Weight Bushings

• The top weight is stabilized with an engineered composite structure with self-
lubricating bushings.

8. Weight Stack Guide Rods

• Guide rods are ¾" cold drawn steel, turned ground and polished with hard chrome
finish

9. Weight Stack Suspension

• Durable rubber bumpers are placed under each stack to reduce shock and vibration
stresses to the frame and facility floor.

10. Weight Selection Shaft

• The shaft is constructed of zinc plated cold finished steel and precision drilled for
accurate pin selection
11. Weight Transport
• 7x19 construction, 3/16" galvanized steel, internally lubricated, nylon-coated aircraft
cable with breaking strength rated at over 4,000 pounds.
12. Cable Adjustment
• All cables can be adjusted at the top weight utilizing a metric 24mm open-end
wrench.
13. Pulleys
• All pulleys are at least 4-1/4" working diameter using fiberglass-impregnated nylon
with precision fit cable groove and double sealed bearings.
14. Pulley Covers
• As a safety precaution, all pulleys are covered to minimize the danger of a moving
pulley catching a person's finger or clothes.
15. Bolts
• All hardware is stainless steel, zinc or nickel plated
16. Upholstery
• Contoured pads on selective units
• All edges are stitched to eliminate any folds in the material that would limit durability.
17. Foam
• Three and Four pound EVA foam (deformation resistant) or equivalent is used on all
machines. The foam is injection molded directly to the multi-ply wood support board
with integral 10mm T-nuts.
LIFE FITNESS Cable Motion Owners Manual
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