Here's why:
* Engine Type: The oil weight depends on the type of engine your SRX75 has. Some mowers use gasoline engines, while others use diesel engines. Each requires different oil viscosities.
* Operating Conditions: The recommended oil weight also depends on the climate you live in and how frequently you use the mower.
* Manufacturer Recommendations: The best source for this information is your John Deere owner's manual. It will list the specific oil weight and type recommended for your model.
Here are some ways to find the information you need:
1. Check your owner's manual. You should have received this with your mower.
2. Visit the John Deere website: Search for your SRX75 model and download the user manual.
3. Contact John Deere customer service: They can provide you with the correct information for your mower.
Using the incorrect oil weight can damage your engine. Always consult your owner's manual or contact John Deere directly for the most accurate recommendations.