How to check the engine oil level on a Vespa ET4 scooter
Checking the engine oil level in your Vespa ET4 scooter is one of the most important maintenance items for your scooter. Without engine oil, the scooter engine will seize and incur a major repair bill.
Checking the oil on your Vespa ET4 will take 5 minutes and a paper towel. As part of regular scooter maintenance, check your engine oil at least every other trip on your scooter. Your scooter will reward you with reliabilty and around 40,000 miles before you need any major engine work.
Instructions
Park the scooter
Park the scooter on a stable level surface. Find the Vespa ET4 engine oil dipstick. It is located on the left lower part of the ET4 engine (150cc model). The location is different for ET4 50cc and 125cc engines.
The dipstick is the black knob in the centor of this picture.
Unscrew the dipstick
Remove the dipstick and wipe with a clean paper towel or cloth. Rescrew the dipstick completely back into its normal position. Let sit 5 seconds. Unscrew the dipstick and check the oil level.
Interpreting the dipstick
The oil should be between the MIN level and the MAX level.
Stock Vespa ET4 dipstick (black) — The MIN level is the bottom of the dipstick. The MAX level is the mark in the middle of the dipstick.
Jettin Industries dipstick (blue) — The MIN level is the bottom of the dipstick. The MAX level is the top mark on the dipstick.
Add oil or replace dipstick
If the engine oil level is fine on your dipstick, rescrew it completely back into the fill hole.
If the engine needs oil, stick a funnel into the fill hole. Add 100 cc of engine oil. Check the oil level with the dipstick. Repeat until the oil level is between the MIN and MAX marks.


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