Simplicity 9020 PowrMax
The Simplicity 9020 PowrMax is a powerful lawn and garden tractor that was made from 1975 to 1980. It has a strong 19.5 hp gasoline engine made by Onan. This engine is air-cooled and has two cylinders. The tractor is built for easy driving, with a hydrostatic transmission that lets you change speeds smoothly without shifting gears. This tractor is great for yard work. It has both front and rear PTOs (power take-offs) that run at 2000 rpm. These help you use different tools and attachments. The 9020 PowrMax is big for a lawn tractor, measuring 82.7 inches long and 55.9 inches wide. It weighs 1299 pounds, which is very heavy for its class. The tractor has special lawn tires in front and back to be gentle on grass. It also has a large fuel tank that holds 3.8 gallons of gas, so you can work for a long time without stopping to refuel.

Quick specs
- Category
- Lawn and Garden
- Engine Power Output
- 20hp
- Operating Weight
- 1,299 lb
- Transmission
- Hydrostatic
At a glance
How the 9020 PowrMax compares
vs. Lawn and Garden medianDistribution
Engine Power (hp)
Across all Lawn and Garden tractors
This model
The 9020 PowrMax ranks at the 54th percentile for engine power among recorded lawn and garden tractors.
Overview
About the Simplicity 9020 PowrMax
The Simplicity 9020 PowrMax is a powerful lawn and garden tractor that was made from 1975 to 1980. It has a strong 19.5 hp gasoline engine made by Onan. This engine is air-cooled and has two cylinders. The tractor is built for easy driving, with a hydrostatic transmission that lets you change speeds smoothly without shifting gears. This tractor is great for yard work. It has both front and rear PTOs (power take-offs) that run at 2000 rpm. These help you use different tools and attachments. The 9020 PowrMax is big for a lawn tractor, measuring 82.7 inches long and 55.9 inches wide. It weighs 1299 pounds, which is very heavy for its class. The tractor has special lawn tires in front and back to be gentle on grass. It also has a large fuel tank that holds 3.8 gallons of gas, so you can work for a long time without stopping to refuel.
Full specifications
Every recorded spec
General
| Manufacturer | Simplicity |
|---|---|
| Model | 9020 PowrMax |
| Category | Lawn and Garden tractor |
| Type | 4x2 2WD |
| Years built | 1975–1980 |
| Operating weight | 1,299lb |
Engine
| Make | Onan |
|---|---|
| Model | CCKB |
| Power | 19.5hp |
| Cylinders | 2 |
| Displacement | 49.8ci |
| Bore | 3.27in |
| Stroke | 2.99in |
Transmission
| Type | Hydrostatic |
|---|
Chassis & drive
| Chassis | 4x2 2WD |
|---|---|
| Drive | 2WD |
| Steering | Manual |
| Brakes | Disc |
| Cab | Open |
Power take-off
| Rear PTO | Front and Rear - Independent with electric clutch |
|---|---|
| PTO speed | 2,000rpm |
Dimensions
| Length | 82.7in |
|---|---|
| Width | 55.9in |
| Height | 47.6in |
| Operating weight | 1,299lb |
Head to head
9020 PowrMax vs. Lawn and Garden median
How the Simplicity 9020 PowrMax compares to other Lawn and Garden tractors
| Spec | This model | Lawn and Garden median | Difference | Percentile |
|---|---|---|---|---|
| Engine Power | 19.5 hp | 18 hp | +8% | 54th |
| Engine Displacement | 49.8 ci | 41.1 ci | +21% | 74th |
| Cylinders | 2 | 2 | at median | 50th |
| Operating Weight | 1,299 lb | 738 lb | +76% | 71st |
| Length | 82.7 in | 71.7 in | +15% | 79th |
| Width | 55.9 in | 43.3 in | +29% | 91st |
| Height | 47.6 in | 42.9 in | +11% | 74th |
Medians and percentiles are computed from the lawn and garden tractors in our database with a recorded value for each spec (sample sizes 269–380 models).
Compare to tractors with similar specs
Commonly compared Simplicity tractors
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| Simplicity Citation 21/48 | 21 hp | 968 lb | 2006–2009 | Compare → |
| Simplicity 7117 | 17 hp | — | 1979–1986 | Compare → |
| Simplicity 4040 PowrMax | 16.5 hp | 1,301 lb | 1972+ | Compare → |
| Simplicity 5216 | 16 hp | 403 lb | 1984–1990 | Compare → |
| Simplicity 6216 | 16 hp | 728 lb | 1981–1987 | Compare → |
Commonly compared tractors with similar horsepower from other brands
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| Allis Chalmers 620 | 19.5 hp | 1,499 lb | 1973–1975 | Compare → |
| Allis Chalmers 720 | 19.5 hp | 1,299 lb | 1975–1983 | Compare → |
| Bolens HT20 | 19.5 hp | 1,091 lb | 1973–1978 | Compare → |
| Ag King AK2040 | 20 hp | 2,470 lb | — | Compare → |
| Ariens GT20 | 20 hp | 959 lb | 1988–1995 | Compare → |
Explore
Simplicity siblings
Explore
Similar-spec models
Gallery
Simplicity 9020 PowrMax photos



FAQ
Common questions
When was the Simplicity 9020 PowrMax made?
The Simplicity 9020 PowrMax was manufactured from 1975 to 1980.
What is the operating weight of the Simplicity 9020 PowrMax?
In working trim, the Simplicity 9020 PowrMax comes in at roughly 1,299 lb.
Which transmission does the Simplicity 9020 PowrMax use?
The Simplicity 9020 PowrMax is equipped with a Hydrostatic transmission.
What is the engine power output of the Simplicity 9020 PowrMax?
Rated engine output for the Simplicity 9020 PowrMax is 19.5 hp, delivered by a 2-cylinder engine. The engine displaces 49.8 ci.
How do I maintain a Simplicity 9020 PowrMax?
Routine service for the Simplicity 9020 PowrMax covers engine oil and filter changes, hydraulic and coolant level checks, air filter cleaning, and scheduled inspections. Refer to the manufacturer's maintenance schedule for exact intervals.

