Snowblower: Won't clear snow well
A snowblower won’t clear snow well if the auger isn't spinning fast enough or sections of the auger don't spin. Then the auger housing and chute can clog with snow. If the snowblower isn't picking up snow well, your first step is to turn off the snowblower, inspect the chute for a clog and clear it. If the chute is clear, next check the auger sections for a broken shear pin, which prevents the auger from turning. If the auger spins slowly, check and adjust the auger drive belt or control cable; replace the auger drive belt or control cable if either is damaged. Here's a video that shows how to troubleshoot problems with clearing snow: Snowblower Won't Blow Snow: Troubleshooting Chute and Auger Issues Video
These repairs may help solve your Snowblower problem:
Adjust or replace the snowblower belts
A worn or loose belt can slip or squeal when the snowblower is in use. Physically examine the belt and pulleys. If the belt is worn, replace it. If the belt is sound, adjust the pulleys to tighten the belt.
Replace the snowblower shear pin
Shear pins fasten the augers to their drive shaft. They're designed to break if the auger hits a large foreign object or hard-packed snow, to protect the motor and transmission from damage.The auger won't turn if the shear pin isn't intact, so replace it if it breaks.
Adjust or replace the snowblower skid shoes
The skid shoes control the height of the auger housing. They wear down over time. Adjust the skid shoes as needed to maintain the proper height of the auger housing. Skid shoes are reversible; turn them over if one side is worn out. Replace them when both sides are worn out.
Do a snowblower tune-up
A tune-up restores the snowblower to its peak operating condition. A tune-up includes changing the oil, cleaning the engine, replacing the air filter, checking the ignition system, inspecting the carburetor, testing the battery, adjusting the throttle and choke controls, and adjusting and lubricating all moving parts.
Replace the snowblower auger drive cable
The auger drive cable is a control cable that connects the auger control lever on the control panel to the engagement lever in the auger drive system. When the auger won’t engage, the cause is often a damaged, worn, or broken auger drive cable. Inspect the cable and replace it if it's worn or damaged.
Clear the snowblower chute and housing
Snow and ice can build up inside the chute and housing, restricting the exit path of the snow being cleared. Shut off the snowblower and clear built-up ice and snow.
Replace the snowblower auger
Hitting rocks or other foreign objects hidden beneath the snow damages the auger. Broken or bent auger blades won't move snow into the impeller and out through the discharge chute. Replace the auger blades if damaged after hitting a large object that breaks the shear pins. Inspect the auger blades regularly and replace the auger if you find bent or damaged auger blades.
Replace the snowblower gearcase assembly
The auger drive system uses a gearcase to rotate the auger shaft so that the augers can move snow. Replace the gearcase if the auger won't spin properly or at all.
Adjust the snowblower auger drive cable
If the auger doesn't stop when you release the control lever, the auger drive cable is too tight. If the auger doesn't rotate when you engage the control lever, there's too much slack in the auger drive cable. In both cases, adjust the auger drive cable so it starts and stop the auger correctly.