Briggs & Stratton Quantum Snow

Other manuals for Briggs & Stratton Quantum Snow

Questions and Answers

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Michael HarrisonAug 17, 2025
What to do if my Briggs & Stratton Quantum Snow Engine will not start?
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  hamiltonjackAug 17, 2025
  If your Briggs & Stratton Engine won't start, begin by adding clean, fresh fuel. If the carburetor is flooded, move the choke control lever to the RUN position and follow the starting procedure until the engine starts. Check the oil level, as some engines have an oil pressure switch that activates a warning light or stops the engine if the pressure drops too low. Also, inspect the spark plug; it may need cleaning and the gap adjusted. Finally, ensure the oil level isn't above the FULL mark on the dipstick; if it is, drain the excess oil.
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Danielle CervantesAug 20, 2025
How to fix a Briggs & Stratton Quantum Snow Engine that will not start?
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  emilygrayAug 20, 2025
  If your Briggs & Stratton Engine won't start, it might be due to several reasons. First, ensure you have enough fuel by adding clean, fresh fuel. If the carburetor is flooded, move the throttle control lever (if equipped) to the FAST position and follow the starting procedure. Check the oil level and add oil to the FULL mark on the dipstick if it's low. If the oil level is above the FULL mark, drain the excess. Lastly, inspect the spark plug; clean and set the gap, or replace it if it's burned or worn.
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Caleb StoneAug 23, 2025
Why is my Briggs & Stratton Quantum Snow Engine running erratically?
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  nmillerAug 23, 2025
  If your Briggs & Stratton Engine is running erratically, several factors could be responsible. Stale fuel can cause issues, so drain the fuel tank and refill it with fresh fuel. Dirt in the fuel tank can also lead to problems; in this case, drain and clean the tank before adding fresh fuel. A dirty air filter may also be the culprit, so clean or replace it. Lastly, inspect the spark plug; if it's fouled, clean it and set the gap, or replace it if necessary.
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mdavisAug 26, 2025
What to do if my Briggs & Stratton Quantum Snow Engine smokes excessively?
- B
  Brandon JonesAug 26, 2025
  Excessive smoke from your Briggs & Stratton Engine can stem from a few issues. Check the oil level first; if it's above the FULL mark on the dipstick, drain the excess oil to bring it to the correct level. Also, a dirty air filter can cause smoking, so clean or replace it. Lastly, a fouled spark plug can be the cause, so clean and set the spark plug gap, replacing the plug if it's burned or worn.
C
Carla RussellAug 28, 2025
What to do if my Briggs & Stratton Quantum Snow is difficult to start or runs erratically?
- J
  John AliAug 28, 2025
  If your Briggs & Stratton Engine is difficult to start, runs erratically, or won't run at full speed, the issue could stem from stale fuel. In this case, drain the fuel tank. Also, check for dirt in the fuel tank; if present, drain and clean the tank before refilling with fresh fuel. A dirty air filter can also cause these problems, so clean or replace it. Finally, inspect the spark plug; clean and set the gap, or replace it if it's burned or worn.
E
Emily RossAug 31, 2025
Why is my Briggs & Stratton Quantum Snow smoking excessively?
- R
  Robert MartinezAug 31, 2025
  If your Briggs & Stratton Engine smokes excessively, it may be due to the oil level being above the FULL mark on the dipstick. Drain the excess oil to bring the level to the FULL mark. Another possible cause is a dirty air filter, so clean or replace it. Lastly, a fouled spark plug can cause this issue; clean and set the spark plug gap, or replace the spark plug if it is burned or worn.
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fjensenSep 2, 2025
Why is my Briggs & Stratton Quantum Snow Engine difficult to start?
- D
  Daniel LoveSep 2, 2025
  If your Briggs & Stratton Engine is hard to start or doesn't run smoothly, the fuel may be stale; drain the fuel tank and refill with fresh fuel. There might be dirt in the fuel tank, so drain and clean it before refilling. Clean any debris from the control linkages. Additionally, the spark plug could be fouled; clean and set the spark plug gap, or replace it if the electrode is burned or worn.
M
Matthew OdomSep 5, 2025
What to do if Briggs & Stratton Quantum Snow Engine emits excessive smoke?
- J
  Julia ThomasSep 5, 2025
  If your Briggs & Stratton Engine is producing excessive smoke, it might be due to the oil level being above the FULL mark on the dipstick; drain the excess oil to bring it to the correct level. Another cause could be a fouled spark plug; clean and set the spark plug gap, referring to the Specifications section, or replace the spark plug if it's burned or worn.
K
kellychristopherSep 8, 2025
What to do if a Briggs & Stratton Quantum Snow has excessive vibration?
- U
  uwilliamsSep 8, 2025
  If you experience excessive vibration with your Briggs & Stratton Engine, stop the engine immediately and tighten all fasteners. If the vibration continues, take the unit to an Authorized Briggs & Stratton service dealer.
C
Connor WoodSep 12, 2025
Why can't I pull the starter rope on my Briggs & Stratton Quantum Snow?
- A
  Ashley BrownSep 12, 2025
  If you're unable to pull the starter rope on your Briggs & Stratton Engine, the equipment controls might be engaged. Disengage them to resolve this issue. If the problem persists, it is possible that the engine seized, in that case you should contact a Briggs & Stratton Authorized Dealer.

This document is an Operator's Manual for a Briggs & Stratton Quantum Snow engine, model 120000. It provides essential information for the safe operation, maintenance, and storage of the engine.

The engine is a single-cylinder, L-head, air-cooled gasoline engine designed for various equipment applications. It is certified to meet California Air Resources Board (CARB) Tier 2 Emission Standards and United States Environmental Protection Agency (U.S. EPA) Phase 2 emission standards, indicating its low emissions design.

Technical Specifications:

Model: 120000
Bore: 2.69 inches (68.26 mm)
Stroke: 2.05 inches (51.99 mm)
Displacement: 11.57 cubic inches (190 cc)
Armature Air Gap: 0.006 – 0.010 inches (0.15 – 0.25 mm)
Spark Plug Gap: 0.030 inches (0.76 mm)
Valve Clearance (cold engine, piston 1/4 inch past top dead center):
- Intake: 0.005 – 0.007 inches (0.13 – 0.18 mm)
- Exhaust: 0.005 – 0.007 inches (0.13 – 0.18 mm)
Oil Capacity: Approximately 18 oz. or 0.5 liter.
Recommended Oil: High-quality detergent oil classified "For Service SG, SH, SJ, SL" or higher, such as Briggs & Stratton SAE 5W-30 oil (P/N 100030C) for winter use. Synthetic oil meeting ILSAC GF-2, API certification mark, and API service symbol "SJ/CF ENERGY CONSERVING" or higher is also acceptable at all temperatures.
Fuel Type: Clean, fresh, regular unleaded gasoline with a minimum of 85 octane. Do not use gasoline containing Methanol or mix oil with gasoline.
Engine Power Rating: Gross power rating is labeled in accordance with SAE code J1940 and J1995. Actual gross engine power may be lower due to ambient operating conditions, accessories, and application limitations.

Usage Features:

The manual outlines a clear starting procedure:

Add Oil: Ensure oil level is at the FULL mark on the dipstick, using the correct oil type for the expected starting temperature. Overfilling should be avoided.
Fill with Gasoline: Use fresh, regular unleaded gasoline.
Prepare for Start: Push the stop switch to the ON position, move the choke to the choke position, and firmly press the primer bulb. The number of primer presses depends on the temperature (two times for 15°F (-9°C) or higher, four times for below 15°F (-9°C)).
Start Engine: Grasp the rope handle, pull slowly until resistance is felt, then pull rapidly to start the engine and avoid kickback.
Operating: After starting, allow the engine to warm up for several seconds to minutes, then slowly adjust the choke to the RUN position. Wait until the engine runs smoothly before each choke adjustment.
Stopping: Push the stop switch to the OFF position. To prevent rewind freeze-up, pull the rope handle until resistance is felt, then stop, repeating three times.

Safety is emphasized throughout, with warnings against starting the engine indoors, cranking with the spark plug removed, using pressurized starting fluids, and overfilling the fuel tank. The manual also highlights the risk of kickback from the starter cord and contact with rotating parts. Carbon monoxide poisoning is a significant hazard when operating the engine in enclosed spaces.

Maintenance Features:

The manual provides a detailed maintenance schedule and instructions:

Check Oil Level: Every 8 hours or daily.
Change Oil: After the first 5 to 8 hours of use, then every 50 hours or every season. Change every 25 hours under heavy load or high temperatures. Used oil should be disposed of properly.
Replace Spark Plug: Every season (or as needed based on inspection). Check gap and cleanliness.
Clean Debris: Daily or before every use. Keep grass, chaff, or accumulated debris off the engine, especially around the muffler, linkage, springs, and controls. Do not use water to clean engine parts to avoid contaminating the fuel system.
Clean Air Cooling System: Every 50 hours or every season. Remove the housing, clean internal cooling fins and surfaces to prevent overheating.
Clean Combustion Chamber: Recommended after every 100-300 hours by an authorized service dealer to remove deposits from the cylinder, cylinder head, piston, and valves.

Storage:

For storage longer than 30 days, specific steps are required:

Fuel System Preparation: Either run the engine until it runs out of fuel (if using oxygenated/reformulated gasoline) or add a gasoline additive and run the engine for several minutes to circulate it through the carburetor.
Change Oil: While the engine is still warm.
Cylinder Lubrication: Remove the spark plug, pour about 1/2 oz. (15 ml) of engine oil into the cylinder, replace the spark plug, and crank slowly to distribute the oil.
Clean Engine: Remove surface debris, chaff, or grass.
Storage Location: Store in a clean, dry area, away from ignition sources like stoves, furnaces, or water heaters.

Warranty Information:

Briggs & Stratton provides a limited warranty for material and workmanship defects, with transportation charges borne by the purchaser. The warranty period varies by brand/product type and usage (consumer vs. commercial). Emissions control system parts are warranted for two years. The manual clarifies owner responsibilities for maintenance and presenting the engine to an Authorized B&S Service Dealer for warranty repairs. It also lists conditions that void the warranty, such as misuse, improper maintenance, non-original parts, or alterations.