Ask at your local lawnmower store.
i have one that is a model 77e
No such shotgun model number/
The oil pump is located in the timing chain cover. If you are going to replace the oil pump, it is strongly recommended that you purchase a new timing chain also. Saturn sells a kit which includes both the chain and the oil pump. Once you have removed the timing chain cover, the oil pump can be removed using a number 30 Torx driver.
It is almost impossible to determine what a model number is based only on the serial number.
That is not a model number, but is likely the serial number. Unless you have a Model 620 US marked Trench Gun, Stevens pump shotguns have little collectors value.
You would need to provide the model number and serial number to get a correct answer to your question.
It is a volumetric pump
You need to provide a model number
It is a Remington Model 12 .22 cal. pump
With the serial number that you have supplied,your Winchester model 12 pump action shotgun was made in the year 1954.
1915
It all depends on the model number. Please state the model number.