Safety Instructions
Important Safety Symbols:
- ⚠️ WARNING: Indicates a hazardous situation which, if not avoided, could result in death or serious injury
- ⚠️ CAUTION: Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury
- ℹ️ NOTE: Indicates important information about product operation or maintenance
General Safety Rules
- Read Manual Thoroughly: Read and understand all instructions before operating the mower.
- Clear Mowing Area: Remove stones, sticks, wire, and other objects that could be thrown by the blade.
- Wear Proper Attire: Wear substantial footwear, long pants, and eye protection while mowing.
- Inspect Before Use: Check mower for damaged parts and ensure all guards and shields are in place.
- Mow in Daylight: Only mow in good daylight conditions with clear visibility.
- Keep Bystanders Away: Keep children and pets at least 50 feet away while mowing.
- Slope Operation: Mow across slopes, not up and down. Use extreme caution on inclines.
- Fuel Safety: Add fuel outdoors before starting, never when engine is running or hot.
Assembly Guide
Tools Needed:
- Adjustable wrench
- Phillips screwdriver
- Pliers
- Socket set (included)
- Safety gloves
Step-by-Step Assembly
- Unpack Contents: Remove all parts from packaging and verify contents against parts list.
- Handle Assembly: Attach upper and lower handle sections using provided bolts and wing nuts.
- Install Height Adjuster: Connect the cutting height adjustment lever to the deck.
- Attach Grass Bag: Connect the grass collection bag to the rear discharge chute.
- Install Blade: Carefully install the cutting blade using the blade adapter and bolt (ensure blade is properly oriented).
- Add Oil: Fill engine with SAE 30 detergent oil (check manual for exact capacity).
- Add Fuel: Fill fuel tank with fresh unleaded gasoline (do not overfill).
- Final Check: Ensure all bolts are tightened and safety features are functional.
Specifications
| Model Number | CMXGRAM1130047 |
| Engine Type | Briggs & Stratton 140cc OHV |
| Cutting Width | 21 inches |
| Cutting Height | 1.25 to 3.75 inches (6 positions) |
| Deck Material | Steel with corrosion-resistant coating |
| Wheel Size | 8 inches (front), 10 inches (rear) |
| Weight | 65 lbs (without bag) |
| Fuel Capacity | 1.1 quarts |
| Oil Capacity | 20 oz (SAE 30) |
| Starting System | Recoil pull start |
| Mulching Capability | Yes (mulching plug included) |
| Bag Capacity | 2.1 bushels |
Warranty Information
- Full Warranty: 2 years limited warranty
- Engine Warranty: 3 years on Briggs & Stratton engine
- Deck Warranty: Lifetime warranty on deck shell
- Registration: Register within 30 days for full warranty coverage
For warranty service, contact Craftsman Customer Service at 1-888-331-4569 or visit Craftsman.com
Operation Guide
Starting Procedure
1. Check oil level
2. Fill fuel tank
3. Prime engine (3-5 presses)
4. Set throttle to FAST
5. Pull starter cord smoothly
6. Allow engine to warm up 30 seconds
Cutting Height Adjustment
Adjust all four wheels simultaneously using the single lever. Six positions from 1.25" to 3.75". Always adjust on level surface with engine off.
Mowing Patterns
Alternate mowing direction weekly. Overlap each pass by 2-3 inches. Mow when grass is dry for best results. Never cut more than 1/3 of grass height at once.
Bagging/Mulching/Side Discharge
Install appropriate attachment for desired operation. Use mulching plug for nutrient recycling. Bag for cleanest appearance. Side discharge for tall/wet grass.
Operating Controls
Drive Control
Press and hold lever to engage self-propelled drive. Release to stop movement. Adjust speed using throttle control.
Blade Control
Press and hold safety lever to handlebar while pulling blade engagement lever. Both must be held for blade operation.
Height Adjustment
Single lever adjusts all four wheels through six cutting positions. Ensure mower is on level surface when adjusting.
Fuel Shutoff
Close fuel valve when transporting or storing mower. Always run engine dry at end of season for winter storage.
Maintenance Schedule
| Maintenance Task | Frequency | Procedure |
|---|---|---|
| Check Engine Oil Level | Before each use | Check dipstick, add SAE 30 oil if needed |
| Clean/Replace Air Filter | Every 25 hours | Remove foam pre-filter, wash in soapy water, replace paper filter annually |
| Sharpen/Replace Blade | Every 25 hours | Remove blade, sharpen at 22° angle, balance before reinstalling |
| Change Engine Oil | Every 50 hours or season | Drain warm oil, refill with 20 oz SAE 30 detergent oil |
| Clean Underside of Deck | After each use | Scrape clean with putty knife, hose off debris (engine off) |
| Check Spark Plug | Every 100 hours | Clean and gap to 0.030", replace annually |
| Lubricate Wheels | Every season | Apply light machine oil to wheel bearings and axles |
| Winter Storage | End of season | Drain fuel or add stabilizer, clean thoroughly, store in dry place |
Blade Maintenance
- Removal: Disconnect spark plug, tip mower on side, use block of wood to prevent blade rotation
- Sharpening: Maintain original 22° cutting angle, remove equal amount from both ends
- Balancing: Use blade balancer or hang from nail - blade should remain horizontal
- Installation: Reinstall with "grass side" toward ground, torque to 40-50 ft-lbs
- Replacement: Replace if damaged, cracked, or excessively worn
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Engine won't start | No fuel, stale fuel, clogged air filter, spark plug issue | Check fuel level, use fresh gas, clean air filter, check spark plug |
| Engine starts then dies | Dirty carburetor, clogged fuel filter, bad gasoline | Clean carburetor, replace fuel filter, drain old gasoline |
| Poor cutting performance | Dull blade, engine speed too low, wet grass | Sharpen blade, set throttle to FAST, mow when grass is dry |
| Uneven cutting | Uneven tire pressure, bent blade, deck not level | Check tire pressure, replace blade, adjust deck level |
| Excessive vibration | Bent blade, loose blade, debris in blade area | Replace blade, tighten blade bolt, clean under deck |
| Self-propel not working | Drive belt loose/broken, drive control cable adjustment | Replace drive belt, adjust drive control cable tension |
| Grass not discharging | Wet grass, deck clogged, engine speed too low | Mow when dry, clean deck, operate at full throttle |
| Wheels not turning freely | Debris in wheel bearings, lack of lubrication | Clean wheel bearings, apply light machine oil |
Storage Instructions
- Short-term (1-2 months): Add fuel stabilizer, run engine 5 minutes to circulate
- Long-term (seasonal): Drain fuel completely or add stabilizer and run dry
- Winter Storage: Change oil, remove spark plug and add 1 oz oil to cylinder, clean thoroughly
- Battery (if equipped): Remove battery, store in cool dry place, charge monthly
- Storage Location: Store in dry, covered area away from moisture and direct sunlight
Manual Downloads
Current Model Manuals
M210
21" Push Mower
M310
21" Self-Propelled
M110
20" Push Mower
M215
21" Electric Start