Parts Explosion Diagram
Tools Needed for Parts Replacement:
- Socket wrench set
- Screwdrivers (flat and Phillips)
- Pliers (regular and needle-nose)
- Torque wrench
- Safety gloves and goggles
Assembly Parts Identification
- Engine Assembly: Briggs & Stratton 190cc OHV engine with parts including spark plug, air filter, carburetor, and recoil starter.
- Deck Assembly: 21-inch steel cutting deck with blade, blade adapter, and deck housing components.
- Handle Assembly: Adjustable handle with control cables, height adjustment levers, and safety bail.
- Wheel Assembly: Four 8-inch wheels with axles, bearings, and mounting hardware.
- Drive System: Front-wheel drive system with transmission, drive belt, and engagement cable.
- Bagging System: Rear bagger assembly with bag, chute, and mounting hardware (if equipped).
- Mulching Kit: Mulching plug and blade (optional accessory).
Specifications
| Model Number | CMXGRAM1130047 |
| Engine Type | Briggs & Stratton 190cc OHV |
| Cutting Width | 21 inches |
| Cutting Height | 1.25 to 3.75 inches (6 positions) |
| Drive Type | Front-Wheel Drive |
| Wheel Size | 8 inches (front and rear) |
| Fuel Capacity | 1.1 gallons |
| Oil Capacity | 20 oz (SAE 30) |
| Weight | 68 lbs |
| Deck Material | Steel with powder coat finish |
| Warranty | 2 years limited |
Engine Specifications
- Engine Model: Briggs & Stratton 850 Series
- Displacement: 190cc
- Power Output: 6.75 ft-lbs torque
- Fuel Type: Unleaded gasoline (87 octane or higher)
- Oil Type: SAE 30 (above 40°F) or 10W-30 (all temperatures)
- Spark Plug: Champion RC12YC (gap: 0.030 inch)
For warranty service, contact Craftsman Customer Service at 1-888-331-4569 or visit Craftsman.com
Common Replacement Parts
Cutting Blade
Original part #: 942-0742A. High-lift blade for optimal grass discharge. Replace every 2 seasons or if damaged. Always balance after sharpening.
Drive Belt
Original part #: 144-9591. 1/2" x 46" V-belt for drive system. Inspect annually for cracks or wear. Replace if frayed or glazed.
Air Filter
Original part #: 492932S. Dual-stage foam and paper filter. Clean foam element monthly, replace paper element annually or every 25 hours.
Spark Plug
Original part #: Champion RC12YC. Replace every season or every 100 hours of operation. Gap to 0.030 inch before installation.
Wheel Assembly
Original part #: 732-04496. Complete 8-inch wheel with bearings. Replace if wheels wobble or bearings are worn.
Control Cable
Original part #: 532-141275. Drive engagement cable. Replace if mower doesn't drive properly or cable is frayed.
Maintenance Parts Schedule
Every 25 Hours
Replace air filter, check spark plug, inspect drive belt
Every 50 Hours
Change engine oil, sharpen/replace blade, check wheel bearings
Every 100 Hours
Replace spark plug, check control cables, inspect deck for damage
Season Start
Change oil, clean/replace air filter, check tire pressure, test safety features
Season End
Drain fuel or add stabilizer, clean deck, store properly
As Needed
Replace damaged parts, worn wheels, frayed cables
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Engine won't start | Old fuel, clogged carburetor, bad spark plug | Drain old fuel, clean carburetor, replace spark plug |
| Poor cutting performance | Dull blade, low engine speed, clogged deck | Sharpen/replace blade, adjust throttle, clean deck |
| Mower doesn't drive | Broken drive belt, bad cable, transmission issue | Replace drive belt, adjust/replace cable, check transmission |
| Excessive vibration | Unbalanced blade, bent blade adapter, loose parts | Balance/replace blade, check adapter, tighten all bolts |
| Engine runs rough | Dirty air filter, bad fuel, carburetor issues | Clean/replace air filter, use fresh fuel, clean carburetor |
| Wheels won't turn | Seized bearings, debris in axles, damaged wheels | Clean/lubricate bearings, clear debris, replace wheels |
Common Parts Failure Indicators
- Worn Blade: Grass tips torn instead of cut, uneven cutting pattern
- Bad Drive Belt: Slipping during operation, burning smell, visible cracks
- Clogged Air Filter: Engine runs rich, black smoke, loss of power
- Faulty Spark Plug: Hard starting, misfiring, poor fuel economy
- Worn Wheels: Uneven cutting, difficult pushing, wobbling
- Stretched Cable: Poor drive engagement, inconsistent speed control
Manual Downloads
Current Model Parts Manuals
CMXGRAM1130047
21" Front-Wheel Drive
CMXGRAM1130039
21" Rear-Wheel Drive
CMXGRAM1130055
21" Self-Propelled
CMXGRAM1130063
21" Electric Start
Popular Previous Models
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