Maintaining the Briggs & Stratton 675 Series

Briggs & Stratton 675 Series

The Briggs & Stratton 675 Series bridges the gap between the company’s consumer-focused engines and their Vanguard professional line. Over the years, Billy Goat has offered this engine on several of their smaller models including the KV600SP and MV601SPE lawn vacuums. Here’s what you need to know to keep this engine running reliably.

Maintenance Schedule

First 5 hours of operation: Change the oil.
Each day or every 8 hours: Check the oil, and clean the air intake, controls and muffler.
Every 25 hours or annually: Clean the air filter.
Every 50 hours or annually: Change the oil and clean the exhaust.
Annually: Replace the spark plug, air filter, pre-cleaner and fuel filter (if equipped).

Briggs & Stratton recommends cleaning the engine at least yearly so the fins can keep the engine cool, but you may need to clean it more frequently if you work in dusty conditions.


Exhaust components can remain hot up to a half hour after the engine has been used. Make sure these components have cooled completely before working on the engine.

The end of the exhaust will be covered by either a deflector or spark arrester. Remove this part and clean off any carbon buildup with a brush. A spark arrester can be fitted to any 675 Series to meet local fire codes.

Spark Plug

The electrode gap should be 0.20 inches (0.51 mm). When installing the plug, thread it in by hand, then torque it to 180 in-lbs.


The manufacturer recommends changing the oil while the engine is still warm. The engine oil can be drained by removing a plug on the base of the engine, or by tilting the engine and letting the oil pour through the dipstick tube. If you drain the oil from the dipstick tube on this engine, drain the fuel tank first. When you tip your equipment over, fuel in the tank can leak out.

Start by disconnecting the spark plug and removing the dipstick/filler cap.

If you’re draining the oil from the top of the engine, tilt your equipment on its back side with the dipstick tube facing down, letting the used oil flow into a catch can. If you want to drain the oil through the plug, it can be found toward the rear of the engine. The 675-Series holds 18-20 ounces of 10W40 motor oil.

Air Filter

The air filter cover is held closed by a slide lock on top which can be moved left or right to unlatch.

Depending on the version of the engine installed in your equipment, the air filter box will hold either a paper or foam filter element, and it may have a plastic pre-cleaner sandwiched between this element and the airbox cover. Here’s how you clean each part:

Pre-cleaner — Wash in water and a mild detergent and let it dry.

Foam element — Wash in water and a mild detergent. Once dry, soak the foam in clean engine oil and squeeze out any excess.

Paper element – Tap the element against a hard surface to loosen any collected dirt. Do not use pressurized air. This will force dirt into the pores, clogging the filter.

Fuel Filter

If your engine has a fuel filter, it will be fitted to the fuel line between the gas tank and the carburetor. Even if your engine doesn’t have a filter, it’s still a good idea to check the lines from time to time. If cracks are starting to appear, the fuel line should be replaced.

If your engine has a fuel shut off valve, make sure it’s closed. If it doesn’t, drain the fuel tank.

Squeeze the clamps on the sides of the fuel filter to slide them down the fuel line. Pull the lines off of the fuel filter and slide the new filter onto these hoses. Move the clamps back onto the fuel lines over the filter ends.

Engine Cleaning

Use a brush to sweep off dirt accumulation. Never use water directly to clean the engine. Spray from a pressure washer or garden hose can force water inside, contaminating the oil or saturating the intake, leading to engine damage.

Get Everything You Need for Your Billy Goat isn’t just a dealer for Billy Goat, we’re also a certified dealer for their manufacturing partners including Briggs & Stratton and Honda, so we’re able to offer replacements for every part on your equipment. We have factory parts diagrams and descriptions for all of these brands built into our search engine, making it easy to find the part you need, and we can ship your order to any address in the United States or Canada.

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